Window fastening device



P 1936- H. TARRANT WINDOW FASTENING DEVICE F'iled March 15, 1935 Fig.1.

TARRANT BY HIS ATTORNEY INVENTOR HAROLD Patented Sept. 8, 1936 UNITED STATES WINDOW FASTENING DEVICE Harold Tarrant, Sydney, New South Wales, Australia Application March 13, 1935, Serial No. 10,800

In Australia 2 Claims.

The invention relates to the class of fasteners for sliding sash windows by which the sashes may be locked together from the inside when in all relative positions so that when desired one or both sashes may be open to provide for the passage of air while they are operable from outside the window only together and to limited extent.

According to my invention a fastener of this character is so constructed that it must be withdrawn from action before, and during the sliding of the sashes or either of them, and when released will automatically lock the two sashes together.

An embodiment of my invention is illustrated in the accompanying drawing wherein:-

Fig. l is a plan partly in section.

Figs. 2 and 3 are side elevations.

Figs. 4 and 5 are front and rear elevations, respectively, and

Fig. 6 is a side sectional elevation on line A-A Fig. 1.

A frame for the fastener is comprised of a base plate I having the integral vertical brackets 2 and 3 and a downwardly projecting flange 4 (see Fig. 4) which buts against the upper frame member 5 of the lower window sash, upon the top and left hand side 'of which the fastener is secured by screws 6.

A lever 1 pivoted upon a pin 8 supported in the brackets 2 and 3 is recessed at its forward end to receive a wedge block 9 of rubber, or the like resilient material which is fixed in position by turning into it the edges of the end of the lever as shown in the section, Fig. 6.

The maximum locking effect upon the sashes obtains when lever I is horizontal, and the resiliency of wedge block 9 combined with a bevel of its forward end shown in Figs. 3 and 6 facilitates the turning of the lever into that position, and its release therefrom when required. v

A spring l0 (see particularly Fig. 5) is coiled upon pin 8 and bearing at one end upon a tail piece ll of the lever, and at its other end upon the base plate I, tends to turn the lever upon its pivot so that wedge block 9 presses against the side member l2 of the upper sash of the window.

To prevent the lever from being operated from outside the window, by the insertion of a knife between the frame members of the sashes, the following arrangement is provided.

A plate l3 has a down-turned flange M at its forward end and is slidable horizontally upon the top of base plate I being guided between brackets 2 and 3 by tabs 22 projecting inwardly from said brackets.

Plate l3 has an upturned tab I! to which is connected one end of a tension spring l8 its opposite end being connected to a tab project- August 1, 1934 ing upwardly from base plate I and passing through a longitudinal slot iii in plate l3. The flange l4 upon plate I3 is thereby pressed against the face of member l2 of the upper sash (see Fig. 2) and the passage of a knife blade is prevented.

To prevent side approach by means of a knife or the like to the plate I3 or lever 7, plate l3 has an integral wing [9 which normally projects beyond plate I3 and contacts with the side of the vertical member of the upper sash frame.

Pivot pin 8 passes through slot 24 in the wing member l9.

In Figs. 1 and 2 lever 'l is shown in its horizontal position the sashes being thereby locked together and before either of them can be slid independently of the other, the slide plate i3 is drawn back and lever turned towards the position shown in Fig. 3.

To facilitate this operation a cord attached to tail piece II is threaded through a hole 2i in the upturned end of slide plate l3 and led downwardly over the end of frame I.

As hole 2| is not in alignment between the end of tail piece H and the end of frame i, pull upon the cord simultaneously draws back the slide plate and turns lever 1 until wedge block 9 is free of the sash member i2 as clearly illustrated in Fig. 3.

To provide for longitudinal adjustment when required of lever 1, additional holes 23 are provided for pivot pin 8 in the brackets 2 and 3.

I claim:-

1. A fastener for sliding sash Windows comprising incombination a frame fixed upon the top of the lower sash, brackets extending upwardly from the frame, a lever pivoted in the brackets, a wedge block at the end of the lever adapted to press against the side member of the upper sash and thereby lock together the upper and lower sashes, a spring tending to turn the lever to its locking position, a slide plate having an upwardly extending wing upon one side and a down-turned flange at its forward end, guiding means for the plate, a spring tending to slide it towards the upper sash and means for drawing the plate back and for operating the lever to release the sashes.

2. In a window fastener of the nature indicated the combination with the pivoted lever and slide plate, of a means whereby the lever and plate may be simultaneously operated, said means comprising a cord fixed to the end of the lever and passing through a hole in the slide plate and over the end of the base of the frame in which the lever is pivoted, the end of the lever, the hole in the slide plate, and the end of the base of the frame positioned out of alignment.

HAROLD TARRANT. 

